External Fungicidal Wash
GK PRO can be used as a pre-paint cleaner and fungicidal wash. As a broad spectrum cleaner and sanitiser it will treat 99% of bacterial growths on any surface, not only fungi. If a surface is to be cleaned in preparation for painting, the decorator’s task is to remove biofilms from the surface without soaking the render in order to facilitate a speedier route to painting.
For best results, remove as much bulky growths as possible by scraping and brushing before treating. GK PRO is a surfactant so it is soapy and will attract grease and grime when agitated. However, it's intended function is to kill all living growths on the surfaces requiring painting. Where mould growths have been trapped between previous coats, all existing coatings need to be removed. Brushing or rolling with a slightly weaker solution, say 60:1, followed by a light rinsing of the stained foam will complete the preparation work. Painting can proceed as soon as the treatment has evaporated/dried.
If the painting programme is scheduled for two weeks or more AFTER the cleaning and sanitising process, decorators can save time and effort in allowing the natural weather cycles of sun and rain to do the rinse routine for them. If time allows this is a no-rinse formula.
At Cleaning Service Exterior Cleaning, all products we use are eco-friendly and biodegradable. We test and study the science behind every product. Besides visible evidence of its efficacy we’re particularly concerned that products introduced to remove algae and mould growth, will not cause long term damage to any components like sealants, adhesives or fixings used in the render system. We recently tried GK Pro, a high purity DDAC biocide, my team found it easy and adaptable in use. On heavy soiling we brushed-in, the dense foam drew all the grime well, rinsed and a light re-spray. As a spray and leave formula on regular staining the results were excellent; I have no problem in recommending GK Pro.